She lost her wallet ----- she came back from work.A.while b.

.when
再问： How soon will you come back? ____________ a.in ten minutes b.after two hour c.once a week d.for two days.
再答： a.in ten minutes
再问： The students were ____ leaflets to everyone on the street. A.giving up B.scooping out C.giving out D.coming out
再答： C.giving out
再问： Looking at the children ___ in the park , the mother smiled. A.played B.play C.to play D.playing
再答： D.playing
再问： 确信吗
再答： 我是英语专业研究生